Skip to searchSkip to main content
Fortune ADU
Fortune ADU
We Provide ADU Permit

How to Get an ADU Permit in Santa Clara

ADU

What Is an ADU?

An Accessory Dwelling Unit (ADU) is a secondary housing unit located on the same lot as a primary residence. ADUs can be:​

  • Detached: Separate from the main home.

  • Attached: Connected to the main home.

  • Garage Conversion: Transforming an existing garage into a living space.

  • Basement or Attic Conversion: Utilizing existing space within the home.

  • Junior ADU (JADU): A smaller unit, typically under 500 sq ft, within the existing structure.

πŸ“‹ Key ADU Regulations in Santa Clara

Understanding local regulations is essential before embarking on your ADU project:

  • Zoning: ADUs are permitted in most residential zones.

  • Size Limits: Detached ADUs can be up to 1,200 sq ft; JADUs are limited to 500 sq ft.

  • Setbacks: Minimum of 4 feet from side and rear property lines.

  • Height Restrictions: Maximum height of 16 feet for detached ADUs.

  • Parking: One additional parking space may be required, depending on the location and proximity to public transportation.

  • Owner Occupancy: For JADUs, the property owner must reside on the property.​

πŸ› οΈ Steps to Obtain an ADU Permit in Santa Clara

  1. Determine Eligibility: Ensure your property is zoned for ADU development and meets size and setback requirements.
  2. Design Your ADU: Work with a licensed architect or designer to create plans that comply with local building codes.
  3. Submit Application: Apply through the City of Santa Clara's Permit Center, providing all necessary documentation.
  4. Plan Review: City staff will review your plans for compliance with zoning and building codes.
  5. Permit Issuance: Upon approval, obtain the necessary permits to begin construction.
  6. Construction and Inspections: Complete construction and schedule required inspections.
  7. Final Approval: Once all inspections are passed, receive final approval and occupancy certificate.

πŸ’° How Much Does an ADU Permit Cost in Santa Clara?

β€ŠPermit Typeβ€ŠEstimated Cost
Building Permit
$2,500 – $5,000
Electrical Permitβ€Š$400 – $700
Plumbing Permit$400 – $700
Mechanical Permit$400 – $700
Grading Permit$300 – $500
β€ŠSite Development Permitβ€Š$300 – $500
β€ŠZoning Permitβ€Š$200 – $400

🌟 Benefits of Building a Permitted ADU

  • Increased Property Value: A legal ADU can significantly enhance your property's market value.

  • Rental Income: Generate consistent income by renting out the ADU.

  • Multigenerational Living: Provide housing for family members while maintaining privacy.

  • Legal Compliance: Avoid potential fines and complications associated with unpermitted structures.

  • Tax Deductions: Potential deductions related to property improvements.​

FAQ

Do I need a permit to build an ADU in Santa Clara?

Yes, an ADU permit is required for all ADU constructions in Santa Clara.

How long does the permitting process take?

The permitting process typically takes 1–6 months, depending on project complexity.

Can I rent out my ADU?

Yes, once permitted, you can rent out your ADU.

Are there financial assistance programs for ADUs?

Yes, California offers grants up to $40,000 for pre-construction costs for eligible homeowners.